a-a a-t aaa aad aak aar aat ad- ada add adk adr adt aka akd akk akr ar- ara ard ark arr art at- ata atd atr att daa dad dak dar dat dda ddd ddk ddr ddt dka dkk dkr dkt dra drd drk drr drt dta dtd dtk dtr dtt k-t ka- kaa kad kak kar kat kda kdk kdr kdt kkk kkr kkt kra krd krk krr krt kta ktk ktr ktt ra- raa rad rak rar rat rda rdd rdr rdt rkk rkt rra rrd rrk rrr rrt rta rtd rtk rtr rtt taa tad tak tar tat tda tdd tdk tdr tdt tka tkk tkr tkt tra trd trk trr trt tta ttd ttk ttr ttt